Easy
15
−1
HALVE
SQUARE
+3
÷4
−6
×3
+6
÷9
Medium
48
−15
DOUBLE
−10
HALVE
+2
×1/3
−2
÷4
SQUARE
Hard
49
+2
×31/3
−2
÷7
×31/2
×25%
+45
×2
+48
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).